Wubizixing verse Cangjie

Wubizixing 五笔字型
The way for typing on a cellphone is Wubihua (五笔画) and the computer input method is Wubizixing (五笔字型)。 五笔画 only uses 5 keys to represent the 5 basic strokes, and you type by inputting the strokes in the order that you would write the character. 五笔字型 uses the whole QWERTY keyboard and is more complicated.
1.1. Wubi86 (Wubizixing, not Wubihua) (chinese-forums.com) Using the Wubizixing input method also helps if you are trying to learn Chinese characters, because you have to know how to write the character if you want to type it. This is different from pinyin input methods where you only need to know how to read the character. Therefore, regularly using Wubizixing is a great way to help your written Chinese as it requires you to actively recall the character, rather than passively recall it.
(五笔快打 - seems to be defund Phần mềm Kingsoft luyện gõ Wubi86 51dzt.com)-- defunct (quá cố, không còn tồn tại nữa)
1.2. Unlike in Cangjie, stroke order is pretty important in Wubi. Even for those who know only Chinese, a few Hanzi can be quite confusing since Wubi uses a very specific handwritten standard as its default.
1.3. (chinese-forums.com) Wubi input method ( TOOL: wubi.hrzzz.com)
是jgh(u) j for the 日 component, g for the 一 component, h for the rest of the strokes. u shows this is a character that ends with a right slope stroke, and has a top/down component scheme.
回lk(dd) l for the outer 囗 component, k for the inner 口 component. d shows this is a character that ends with a horizontal stroke, and has an "other" component scheme (not top down, and not left/right). I don't know why they add another d. My wubi IME (Ibus) does not accept the 2nd d.
完 pfq(b) p for the little hat, f for 二, q for 儿. b shows this is a character which ends with a bent stroke and which has a top/down component scheme.
他 wb(n) w for the ren component, b for the 也 component. n shows this is a character that ends with a bent stroke and has a right/left component scheme.
所 rnr(h) r for the 厂 thing with a slanted top, n for the next 2 strokes (square with missing left side), r for the 斤 component. h shows this is a character that end with a vertical stroke and has a left/right component scheme.
出bm(k) b for the |_| top part, m for the 山 component (not radical). k shows this character ends with a vertical stroke and has an "other" component scheme. (since the 2nd wubizixing graphical component overlaps the 1st component)
问uk(d) u for the 门 component, k for the 口 component. d shows this characters ends with an horizontal stroke and has an "other" component scheme.

2.1. (chinese-forums.com) Chinese input methods: Wubizixing

For long characters, the rule in wubi is to type the key for the first 3 roots, and the key for the final root. Let's first break 學 down into its component parts:

First root: 臼 - found on the V key
Second root: 乂 - found on the Q key
Third root: 乂 - found on the Q key
Fourth root: 冖 found on the P key
Fifth root: 子 found on the B key.

So, by choosing the first 3 roots, followed by the final root, we can see that the full key combination for 學 would be VQQB. Compare this to the simplified version 学 - IPBF.

* Actually, just having a quick hunt through those mapping tables now, it appears there is also another mapping for 學 - WFQB, which would use the following roots:

W - for 亻
F - for 二
Q - for 乂

(source)

B - for 子

* Anyway, under wubi, the 亻root is sometimes appropriated for questionable puposes. Normally where there there is a left-falling stroke followed by a vertical stroke, even where the vertical stroke is located to the left of the left-falling stroke e.g. in the character 段, which is WDMC

W for 亻
D for 三
M for 几
C for 又

or even more bizarrely in the character 追 which is WNNP

* (allencch.wordpress.com) Cangjie is hard, but Wubi86 is more easier to learn.